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Solve many security issues with the right lock. A heavy-duty combination lock or a padlock can secure outdoor storage, fences, self-storage units or lockers, keeping your belongings safe.

4 days ago · The meaning of LOCK is a fastening (as for a door) operated by a key or a combination. How to use lock in a sentence.

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In more complex mechanical lock/key systems, two different keys, one of which is known as the master key, serve to open the lock. Common metals include brass, plated brass, nickel silver, and steel. The …

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Sometimes an electronic card or secret numbers will open a lock. The verb to lock means to set the lock so the door or object is closed. A person who works on locks is called a locksmith. A key lock is a …